Proposition
Proposition/Claims are the smallest possible Statements in Predicate Logic. They are the Building-Blocks of the Semantic Web. Claims can be ‘reified’ to make Propositions about Propositions.
Propositions consist of 3 Parts forming a so-called Triple:
- Subject
- Predicate
- Object or Value
The S-P-O order makes for a nice Reading of Propositions in English.
In Obsidian, the canonical Subject is the current Document. Predicates take the form of Verbs or Relations. Predicate and Object/Value are sometimes combined into boolean Tags, which are natively supported in Obsidian using the # (Hash) Notation known e.g. from Twitter. Tags are problematic though because of their proliferation and missing implicit Semantic.
Other Document Formats like TRTL (AKA Turtle) allow to specify Triples directly with a formal, but surprisingly readable Syntax similar to natural Language.
A claim is a statement that one subject, such as a person or organization, makes about a subject. A claim is a debatable statement that an author manifests in a text or theoretical construction, so that the reader accepts it, something that not everyone will accept.
An objective claim is a statement about a factual matter-one that can be proved true or false. A subjective claim is not a factual matter; it is an expression of belief, opinion, or personal preference, and cannot be proved right or wrong by any generally accepted criteria.